11-71. A particular proton in space is subjected to two fields: a
gravitational field (1.30X105 N/kg toward planet X),
an electric field (2.47X10-4 N/C away from planet X).
(a) If the proton is released from rest, in which direction will
(b) After moving 1.50 m, what will be its speed? Use energy
and assume uniform fields.
FE = qE
Fg = mg
Before continuing, calculate FE and
Fg . The mass of the proton is 1.673X10-27
and the charge on a proton is 1.602X10-19 C.